In the heart of Kinshasa’s bustling industrial landscape, Yoane Steel has established itself as a trusted partner for critical materials, proudly serving the Congo and beyond with a steadfast commitment to quality and reliability. Our expertise shines brightly with the supply of ASME SA 387 Grade 91 Class 1 & 2 sheets and plates, high-performance steels engineered for the most demanding environments. We understand that your projects require materials that won’t just meet specifications, but exceed expectations for durability and safety, which is why we ensure every piece we provide is backed by rigorous verification and dependable service.
The strength of this material lies in its carefully balanced composition, primarily chromium and molybdenum with an addition of vanadium and niobium. This alloy recipe gives Grade 91 its exceptional mechanical properties, including remarkable tensile strength and outstanding resistance to creep—the tendency to slowly deform under high heat and stress. It’s specifically designed to maintain its integrity and performance at elevated temperatures, making it far superior to standard carbon steels for high-pressure applications, ensuring long-term reliability in critical systems.
| Standard | ASTM A387 / ASME SA387 |
|---|---|
| Width | 1000mm-3000mm |
| Thickness | 1.0mm – 200mm |
| Production | Hot-Rolled (HR) / Cold-Rolled (CR) |
| Grade | C | Ni | Mn | S | V | Al | Si | Nb | Cr | Mo | Nitrogen | P |
| A387 GR.91 CL.1 & 2 | 0.06-0.15 max | 0.43 max | 0.25-0.66 max | 0.012 max | 0.16-0.27 max | 0.05 max | 0.18-0.56 max | 0.05-0.11 max | 7.90-9.60 max | 0.80-1.10 max | 0.025-0.080 max | 0.025 max |
| Grade | A387 GR.91 CL.1 &2 | |||
| A387 GR.91 CL.1 &2 | Thickness mm | Yield Min Mpa | Tensile Mpa | Elongation Min % |
| t≦50 | 415 | 585-760 | 18 | |
| 50<t≦200 | – | – | – | |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Jaxon Steel is a trusted manufacturer and supplier of high-quality ASME SA 387 Grade 91 Class 1/2 Sheet and Plates in Kinshasa, Congo. We specialize in premium steel products, including Alloy Steel, Carbon Steel, Mild Steel and Galvanized Steel, with a strong focus on Carbon Steel Sheet and Plates. Our extensive inventory also includes Pipes, Tubes, Flanges, Forged Fittings and Bars. Committed to fast delivery and exceptional customer service, we use only the finest raw materials to ensure superior strength, durability and performance for critical industrial applications. Contact us today for all your ASME SA 387 Grade 91 Class 1/2 Sheet and Plates needs!
Ultimately, these plates are the backbone of high-temperature, high-pressure systems that power modern industry. You will commonly find them fabricated into vital pressure vessel components for power generation plants, critical sections of refinery and petrochemical furnaces, and robust heat exchangers. Their ability to withstand extreme conditions makes them indispensable for constructing equipment that must operate safely and efficiently for decades. Choosing this grade is a decision for longevity and safety, ensuring that the infrastructure built today can reliably meet the challenges of tomorrow.
Yoane Steel is a leading manufacturer, supplier and exporter of high-quality Carbon Steel, Alloy Steel, Mild Steel and Galvanized Steel products. Our extensive product range includes Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets and Plates, catering to various industries in Kinshasa, Congo.
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